I think you would be happy with both. However, I narrowed it down to those same two bindings for my new park setup, I ended up going with the Customs since I didn't want such a stiff binding for the park. Think of the cartels as a stiffer Custom with a few more bells and whistles. Both perform well. If I was looking for bindings for freeride I would go with Cartels without a doubt.
East Coast Park Rat
2008 Burton Twin 157 w/ Rome 390 Boss
2005 Burton Canyon 168 w/ Ride LS
"its ppl like you, that I would "impact damage" your face if i ever saw you
keep your mouth shut. one more time, please and thank you." -user: chingy_